simple while loop

Bjarne Stroustrup “Programming Principles and Practice Using C++”
Chapter 4 Drill 1
Using std_lib_facilities.h by Bjarne Stroustrup.

//	Philipp Siedler
//	Bjarne Stroustrup's PP
//	Chapter 4 Drill 1

#include "std_lib_facilities.h"

int main()
{
	cout << "type in two integers or a '|' to terminate the program:\n";
	int x1;
	int x2;

	while (cin >> x1 >> x2)
	{
		if (x1 == '|')
		{
			keep_window_open(".");
		}
		else
			cout << x1 << ", " << x2 << "\n";		
	}

	keep_window_open(".");
}
Output:
type in two integers or a '|' to terminate the program:
2 3
2, 3

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